OpenStack Keystone EC2 api安全绕过漏洞

Adela_09 2013-02-25
发布日期:2013-02-10
更新日期:2013-02-23

受影响系统:
openstack Keystone 2012.x
描述:
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BUGTRAQ  ID: 58033
CVE(CAN) ID: CVE-2013-0282

OpenStack Keystone为OpenStack系列计划提供身份、令牌、目录和策略服务的项目。

Keystone的EC2式身份验证中存在安全漏洞,在验证使用EC2 api的用户之前,无法检查用户、租户、域是否已经启用。经过验证的禁用用户会因此保留应该移除的访问权限。仅启用了EC2式验证的设置受到影响。要禁用EC2验证,可在keystone.conf的keystone API pipeline中删除EC2扩展(keystone.contrib.ec2:Ec2Extension.factory)。

<*来源:Nathanael Burton
 
  链接:http://secunia.com/advisories/52186/
        http://lists.openstack.org/pipermail/openstack-announce/2013-February/000079.html
*>

建议:
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厂商补丁:

openstack
---------
openstack已经为此发布了一个安全公告(2013-005)以及相应补丁:
2013-005:[openstack-announce] [OSSA 2013-005] Keystone EC2-style authentication accepts disabled user/tenants (CVE-2013-0282)
链接:http://lists.openstack.org/pipermail/openstack-announce/2013-February/000079.html

补丁下载:

Grizzly (development branch) fix:
https://review.openstack.org/#/c/22319/

Folsom fix:
https://review.openstack.org/#/c/22320/

Essex fix:
https://review.openstack.org/#/c/22321/

参考:
https://bugs.launchpad.net/keystone/+bug/1121494
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2013-0282
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